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Title: Strategic Buffer Layer Development for YBCO Coated Conductors

Abstract

We have developed a simplified buffer layer architecture for the rolling-assisted biaxially textured substrates (RABiTS) template approach. The overall purpose of this research is to enable potentially a low-cost, high throughput and high yield manufacturing processes for buffer fabrication and to gain fundamental understanding of the growth of buffer layers for RABiTS templates. This understanding is critical to the development of a reliable, robust, and long-length manufacturing process for second generation wires. In this study, efforts are being made to either reduce the number of vacuum deposited layers or to replace one or more of these vacuum deposited layers with a solution based layer. We have chosen Gd{sub 2}O{sub 3} - ZrO{sub 2} system as a potential barrier layer for this study. We have deposited epitaxial Gadolinia Stabilized Zirconia (GSZ) (Zr{sub 1-x}Gd{sub x}O{sub y}; x = 0-1) films on 30-nm thick e-beam evaporated Y{sub 2}O{sub 3} seeded Ni-W (3 at. %) (Ni-3W) substrates using a metal-organic decomposition (MOD) process. Detailed X-ray studies indicated that all of the MOD-GSZ layers were cube textured and both in-plane and out-of-plane lattice parameters increases linearly with increasing the Gd content. We have also developed process conditions for reactively sputter deposited epitaxial Gd{sub 2}Zr{sub 2}O{submore » 7} (Gadolinium Zirconium Oxide (GZO); Zr{sub 1-x}Gd{sub x}O{sub y} (x = 0.5)) films on the e-beam evaporated Y{sub 2}O{sub 3}/Ni - 3W substrates. YBCO films with a critical current density J{sub c} of 2.14 times 10{sup 6} A/cm{sup 2} and 1.4 times 10{sup 6} A/cm{sup 2} at 77 K and self-field were grown on the newly developed architectures of Gd{sub 2}Zr{sub 2}O{sub 7}/Y{sub 2}O{sub 3}/Ni - 3W and Zr{sub 1-x}Gd{sub x}O{sub y} (x = 0.2)/Y{sub 2}O{sub 3}/Ni - 3W substrates, respectively using a pulsed laser deposition (PLD) process. This work promises a route for producing cost-effective simplified buffer architectures for the RABiTS-based YBCO coated conductors.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
OE USDOE - Office of Electric Transmission and Distribution
OSTI Identifier:
992546
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 19; Journal Issue: 3; Journal ID: ISSN 1051-8223
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BUFFERS; MATERIALS TESTING; GADOLINIUM OXIDES; ZIRCONIUM OXIDES; COATINGS; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; NICKEL; TUNGSTEN; FABRICATION

Citation Formats

Paranthaman, Mariappan Parans, Aytug, Tolga, Kim, Kyunghoon, Specht, Eliot D, and Heatherly, Jr, Lee. Strategic Buffer Layer Development for YBCO Coated Conductors. United States: N. p., 2009. Web. doi:10.1109/TASC.2009.2018813.
Paranthaman, Mariappan Parans, Aytug, Tolga, Kim, Kyunghoon, Specht, Eliot D, & Heatherly, Jr, Lee. Strategic Buffer Layer Development for YBCO Coated Conductors. United States. https://doi.org/10.1109/TASC.2009.2018813
Paranthaman, Mariappan Parans, Aytug, Tolga, Kim, Kyunghoon, Specht, Eliot D, and Heatherly, Jr, Lee. Thu . "Strategic Buffer Layer Development for YBCO Coated Conductors". United States. https://doi.org/10.1109/TASC.2009.2018813.
@article{osti_992546,
title = {Strategic Buffer Layer Development for YBCO Coated Conductors},
author = {Paranthaman, Mariappan Parans and Aytug, Tolga and Kim, Kyunghoon and Specht, Eliot D and Heatherly, Jr, Lee},
abstractNote = {We have developed a simplified buffer layer architecture for the rolling-assisted biaxially textured substrates (RABiTS) template approach. The overall purpose of this research is to enable potentially a low-cost, high throughput and high yield manufacturing processes for buffer fabrication and to gain fundamental understanding of the growth of buffer layers for RABiTS templates. This understanding is critical to the development of a reliable, robust, and long-length manufacturing process for second generation wires. In this study, efforts are being made to either reduce the number of vacuum deposited layers or to replace one or more of these vacuum deposited layers with a solution based layer. We have chosen Gd{sub 2}O{sub 3} - ZrO{sub 2} system as a potential barrier layer for this study. We have deposited epitaxial Gadolinia Stabilized Zirconia (GSZ) (Zr{sub 1-x}Gd{sub x}O{sub y}; x = 0-1) films on 30-nm thick e-beam evaporated Y{sub 2}O{sub 3} seeded Ni-W (3 at. %) (Ni-3W) substrates using a metal-organic decomposition (MOD) process. Detailed X-ray studies indicated that all of the MOD-GSZ layers were cube textured and both in-plane and out-of-plane lattice parameters increases linearly with increasing the Gd content. We have also developed process conditions for reactively sputter deposited epitaxial Gd{sub 2}Zr{sub 2}O{sub 7} (Gadolinium Zirconium Oxide (GZO); Zr{sub 1-x}Gd{sub x}O{sub y} (x = 0.5)) films on the e-beam evaporated Y{sub 2}O{sub 3}/Ni - 3W substrates. YBCO films with a critical current density J{sub c} of 2.14 times 10{sup 6} A/cm{sup 2} and 1.4 times 10{sup 6} A/cm{sup 2} at 77 K and self-field were grown on the newly developed architectures of Gd{sub 2}Zr{sub 2}O{sub 7}/Y{sub 2}O{sub 3}/Ni - 3W and Zr{sub 1-x}Gd{sub x}O{sub y} (x = 0.2)/Y{sub 2}O{sub 3}/Ni - 3W substrates, respectively using a pulsed laser deposition (PLD) process. This work promises a route for producing cost-effective simplified buffer architectures for the RABiTS-based YBCO coated conductors.},
doi = {10.1109/TASC.2009.2018813},
url = {https://www.osti.gov/biblio/992546}, journal = {IEEE Transactions on Applied Superconductivity},
issn = {1051-8223},
number = 3,
volume = 19,
place = {United States},
year = {2009},
month = {1}
}